Edward stone



(No Model) v E. STONE.

RAILROAD SWITCH.

No. 292,145. Patented Jan. 15,1884.

- UNITED "STATES PATENT OFFICE.

EDWARD sronn, oF-oonTLAN'D, NEW YORK, Assicnon or oxen-ALF JOHN Honcso v, OF SAME PLACE.

RAILROAD-SWITCH.

SPECIFICATION forming part of Letters Patent No. 292,145, dated January 15, 18.84.

- Application filed July 18, 1883. (No model.) 1

To all whom it may concern:

Be it known that I, EDWARD STONE, a citizen of the United States, residing at Cortland, in the county of Cortland and State of New York, have invented certain new and useful Improvements in Railway-Switches, and I do hereby declare the following to be a full,

clear, and exact description of the invention,-

. arrangement, and adaptation of parts, as will be more fully hereinafter set forth, and specifically pointed out in the claims.

The object of the invention is to provide a construction that will be simple, uncomplicated,.and inexpensive, but also one that may be readily manipulated with one-half the force ordinarily employed, which shall be safe and durable; and to these ends the invention consists in the mechanisms fully illustrated in the accompanying drawings, which form a part of this specification, and in which-- Figure 1 is a plan view, showing the main track open in full lines and the switch-track open in dotted lines,broken away to show the rail-springs. Fig. 2 is a vertical section through the switch-box, and Fig. 3 a detail perspective of the oscillating cam-plate and its bearings.

Referring to the drawings, in which similar letters of reference indicate like parts in all the figures, A designates one rail of the main track, which is continuous, and A the other rail of the main track, said rail A having the ordinary frog, J, and sliding rails K. The

main rail A in one direction connects with the frog on the adjacent main track, (not shown,) and the frog J on the rail A connects directly with the main rail on the adjacent main track in the same direction. I have only shown the construction of one track; but it will be understood that an adjacent track is contemplated of similar construction, but reverse arrangement as. regards position.

In my invention a portion of the main rail is movable. The piece B has a pivot-bearing at b, and has its free end beveled, to make the 7 similar manner a stout spring, 13, serves with a constant force to hold the rail 13 away from the rail A when, the switch is open, the bevel b at such times serving as a guard. The switch is operated by a cam-plate, G, having arms G, each provided with an incline bearing, g, which, when its appropriate switchrail is locked in place, is directly opposite the pivot of the plate G, thus giving an extended bearing and a firm .lock to the rail. The camplate G is connected by a rod, D, pivoted at one end to an arm, g, of said cam-plate, and loosely pivoted at its opposite end to an arm, d, rigid with a rotarystandard, D, journaled within a box, E, as shown. An arm or lever, F, rigidly secured to the rotary standard, works in a segmental slot, inthe box E, and pins as, serving in perforations m, operate to lock said lever at the end of its stroke in either direction.

Referring to Fig. 1, it will be observed that the first action resulting from a stroke of the lever F will be to open the switch-trackby throwing the switch-rail C over against the rail A, the next to release the switch-rail B,

and finally to securely lock the rail 0 firmly in place, the spring B having simultaneously thrown the switch-track entirely open by moving the rail B.

The operation of the cam-plate G, in con nection with the switch-rails B and O, and the results accruing from the springs B and G,

I are important. It will be observedthat only sufficient force to move one of the switch-rails need at any time be applied. The cam-plate G is pivoted at h in a proper frame, H, and its bearings are'such as to sible amount of friction.

Modifications in details of construction may be made without departing from the princigive the least pospie or sacrificing the advantages of my invenmain rails, and springs B and G, as shown, tion, the essential features of which areherein I the cam-plate G, having arms G, with indescribed, so as to be understood by those clined bearings g, the pivot h, rod I), stand- I 5 skilled in the art. I I ard D, lever F, box IE, having slot 9, and Having thus fully described my invention, the lockingrpins m, as and for the purposes what I claim as new, and desire to secure by i set forth. Letters Patent of the United States, is In testimony whereof I affix my signature in 1. In combination with the rails B and C l presence of two witnesses. and the cam-plate G, whereby they are both EDXVARD STOKE. IO forced outwardly, the springs B and O, adapt- \Vitnesses:

ed to serve substantially as herein specified. 1 J. \V. SUGGET'L,

l H. L. Romans.

2. In combination with the rails 13 and O, 

